Ambulatory cardiac monitor



FIG. 1 is a top, left side perspective view of an ambulatory cardiac monitor, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The rear of the article is substantially plain and unornamented. 

The ornamental design for an ambulatory cardiac monitor, as shown. 